http://www.techradar.com/news/moto-x4-release-date-news-and-features

A couple of years ago the Moto X range was Motorola’s flagship line, and while it suddenly stopped to make room for the Moto Z range it's now back from the dead with the brand-new Moto X4.

Despite being the fourth Moto X, this is no longer the flagship line of phones - leave that to the previously launched Moto Z2 Force and sort of the Moto Z2 Play - but it's still an interesting proposition.